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# Senior Software Developer

- **Company:** Harnham
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £110,000.0 - £160,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), .NET Framework, Big Data, C Sharp (Programming Language), Relational Databases, Microsoft SQL Server, Performance Tuning, Systems Architecture, Web Application Frameworks, Backend, Real Time Data
- **Published:** September 3, 2026
- **Apply:** https://www.reed.co.uk/jobs/senior-software-developer/57304113

## About the Role

This is an opportunity for a Senior C# Full Stack Engineer to join a high-performing engineering team working on complex, data-intensive systems. You will have significant ownership over technical decisions, contribute to the design of scalable software solutions, and play a key role in delivering projects that have a direct impact on the business., The successful Full-Stack Software Developer will have the following skills and experience:

 * Strong commercial experience with C# and .NET
 * Experience building backend systems and full stack applications
 * JavaScript and modern frontend frameworks
 * A strong understanding of software engineering fundamentals, architecture, and design principles
 * Experience working with relational databases such as SQL Server or similar
 * The ability to communicate technical concepts clearly and effectively
 * A proactive approach to learning and professional development
 * An interest in sports and a general understanding of how major sports are played and structured

## Description

As a Senior Software Developer, you will build and enhance high-performance C#/.NET applications, working across greenfield projects, real-time data systems, and complex engineering challenges.

Specifically, you can expect to be involved in the following:

 * Designing, building, and optimising high-performance C#/.NET applications
 * Leading the delivery of greenfield projects and enhancements to existing platforms
 * Contributing to system architecture, design decisions, and performance optimization
 * Developing scalable solutions that process and manage large volumes of data
 * Collaborating with highly skilled engineers in a cross-functional environment
 * Taking ownership of projects and contributing to ideas throughout the development lifecycle
 * Mentor and support other developers while promoting engineering best practices, Please register your interest by sending your resume to Majid Latif via the Apply link on this page.
Not what you are looking for?

 * Software Developer jobs
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